Method __add__

python/pathway/internals/table.py:431–472

Build a union of `self` with `other`. Semantics: Returns a table C, such that - C.columns == self.columns + other.columns - C.id == self.id == other.id Args: other: The other table. `self.id` must be equal `other.id` and `self.columns

(self, other: Table)

    @trace_user_frame
    def __add__(self, other: Table) -> Table:
        """Build a union of `self` with `other`.

        Semantics: Returns a table C, such that
            - C.columns == self.columns + other.columns
            - C.id == self.id == other.id

        Args:
            other: The other table. `self.id` must be equal `other.id` and
            `self.columns` and `other.columns` must be disjoint (or overlapping names
            are THE SAME COLUMN)

        Returns:
            Table: Created table.


        Example:

        >>> import pathway as pw
        >>> t1 = pw.debug.table_from_markdown('''
        ...    pet
        ... 1  Dog
        ... 7  Cat
        ... ''')
        >>> t2 = pw.debug.table_from_markdown('''
        ...    age
        ... 1   10
        ... 7    3
        ... ''')
        >>> t3 = t1 + t2
        >>> pw.debug.compute_and_print(t3, include_id=False)
        pet | age
        Cat | 3
        Dog | 10
        """
        if not self._universe.is_equal_to(other._universe):
            raise ValueError(
                "Universes of all arguments of Table.__add__() have to be equal.\n"
                + "Consider using Table.promise_universes_are_equal() to assert it.\n"
                + "(However, untrue assertion might result in runtime errors.)"
            )
        return self.select(*self, *other)

    @property
    def slice(self) -> TableSlice: